Cleaned out public from repository, updated gitignore, added syntax

highlighting tests, improved syntax highlighting and styling of pre
blocks.
Overriding dynamic gist styling.
Added a plugin for pygments caching which should speed things up
terrifically.
added ender.js as a lightweight way of scripting the DOM, events, etc.
Some general typography and semantic html improvements.

_plugins/category.rb

@@ -0,0 +1,65 @@
+module Jekyll
+
+  class CategoryIndex < Page
+    def initialize(site, base, dir, category)
+      @site = site
+      @base = base
+      @dir = dir
+      @name = 'index.html'
+
+      self.process(@name)
+      self.read_yaml(File.join(base, '_layouts'), 'category_index.html')
+      self.data['category'] = category
+
+      category_title_prefix = site.config['category_title_prefix'] || 'Category: '
+      self.data['title'] = "#{category_title_prefix}#{category}"
+    end
+  end
+
+  class CategoryList < Page
+    def initialize(site,  base, dir, categories)
+      @site = site
+      @base = base
+      @dir = dir
+      @name = 'index.html'
+
+      self.process(@name)
+      self.read_yaml(File.join(base, '_layouts'), 'category_list.html')
+      self.data['categories'] = categories
+    end
+  end
+
+  class CategoryGenerator < Generator
+    safe true
+
+    def generate(site)
+      if site.layouts.key? 'category_index'
+        dir = site.config['category_dir'] || 'categories'
+        site.categories.keys.each do |category|
+          write_category_index(site, File.join(dir, category.gsub(/\s/, "-").gsub(/[^\w-]/, '').downcase), category)
+        end
+      end
+
+      if site.layouts.key? 'category_list'
+        dir = site.config['category_dir'] || 'categories'
+        write_category_list(site, dir, site.categories.keys.sort)
+      end
+    end
+
+    def write_category_index(site, dir, category)
+      index = CategoryIndex.new(site, site.source, dir, category)
+      index.render(site.layouts, site.site_payload)
+      index.write(site.dest)
+      site.static_files << index
+    end
+
+    def write_category_list(site, dir, categories)
+      index = CategoryList.new(site, site.source, dir, categories)
+      index.render(site.layouts, site.site_payload)
+      index.write(site.dest)
+      site.static_files << index
+    end
+  end
+
+end
+